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MALPEDIA_Elf_Mirai_Auto

autogenerated rule brought to you by yara-signator

MalwareMiraiMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
Author
Felix Bilstein - yara-signator at cocacoding dot com
Date
2026-05-04
Modified
2026-05-18
Score / Quality
75 / 75

What this rule detects

autogenerated rule brought to you by yara-signator

Associated malware family: Mirai.

It defines 10 patterns (0 text, 10 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

elf-mirai-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Elf_Mirai_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "dfd324ab-3884-55bd-a95c-3bb92553cda0"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/elf.mirai"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/elf.mirai_auto.yar#L1-L111"
		license_url = "N/A"
		logic_hash = "e2e7693ad9a3cb1569f8d0c25c2d84e001f8490aebf2a17804ba9c0f26975142"
		score = 75
		quality = 75
		tags = "FILE"
		version = "1"
		tool = "yara-signator v0.6.0"
		signator_config = "callsandjumps;datarefs;binvalue"
		malpedia_rule_date = "20260422"
		malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
		malpedia_version = "20260504"
		malpedia_license = "CC BY-SA 4.0"
		malpedia_sharing = "TLP:WHITE"

	strings:
		$sequence_0 = { e9???????? e8???????? 66894314 e9???????? }
		$sequence_1 = { 66c1e808 d0e8 8d04c0 28c2 }
		$sequence_2 = { c1ea03 89d0 c1e005 01d0 89ca }
		$sequence_3 = { c1e005 01d0 89ca 29c2 }
		$sequence_4 = { 807c242b00 66894304 7406 66c743064000 c643092f }
		$sequence_5 = { c7433400000000 894330 c6433801 c6433903 }
		$sequence_6 = { c1ea03 89d0 c1e005 01d0 89ca 29c2 }
		$sequence_7 = { 66c1c808 807c242b00 66894304 7406 66c743064000 c643092f }
		$sequence_8 = { 894330 c6433801 c6433903 c6433a03 c6433b06 }
		$sequence_9 = { 6689432a e8???????? c7433400000000 894330 }

	condition:
		7 of them and filesize < 2228224
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ e9???????? e8???????? 66894314 e9???????? }
$sequence_1hex{ 66c1e808 d0e8 8d04c0 28c2 }
$sequence_2hex{ c1ea03 89d0 c1e005 01d0 89ca }
$sequence_3hex{ c1e005 01d0 89ca 29c2 }
$sequence_4hex{ 807c242b00 66894304 7406 66c743064000 c643092f }
$sequence_5hex{ c7433400000000 894330 c6433801 c6433903 }
$sequence_6hex{ c1ea03 89d0 c1e005 01d0 89ca 29c2 }
$sequence_7hex{ 66c1c808 807c242b00 66894304 7406 66c743064000 c643092f }
$sequence_8hex{ 894330 c6433801 c6433903 c6433a03 c6433b06 }
$sequence_9hex{ 6689432a e8???????? c7433400000000 894330 }

Condition

7 of them and filesize < 2228224

In plain words (Heuristic)

  • The file must be smaller than 2228224 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

Test this rule in your browser

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Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.

Open in editor

References

Licence & attribution

Author: Felix Bilstein - yara-signator at cocacoding dot com

Source repository: Malpedia signator rules @ c901f97b7d

Licence: Creative Commons Attribution-ShareAlike 4.0 (repository licence)

Original rule

Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.

Rule id: dfd324ab-3884-55bd-a95c-3bb92553cda0

Metadata

version1
toolyara-signator v0.6.0
signator_configcallsandjumps;datarefs;binvalue
malpedia_rule_date20260422
malpedia_hasha182e35da64e6d71cb55f125c4d4225196523f14
malpedia_version20260504
malpedia_licenseCC BY-SA 4.0
malpedia_sharingTLP:WHITE

Tags:FILE

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